Improved lubricator



flattened, which should he below the lower terminus of. thc screw-thread within the plug D, that is, below the line z, all as clearly shown in tif.,2.

These spaces form partialreservoir-sor large ducts, leading from the main .fountain S, and greatly facilitate the supply of Ioil to the journal", as soun as the regnlatingplug,is raised. t

'lhe length of the round, tapering portion A of the plug, below the space E, should'not be t'oo great, anti I have found, by experiment, that fromV one-half ot'an ineh to one inchJ is sulicieut for the length of this portion of the plug. \Vhen made shorter than onehalt' of an inch, thistapering cud ot' the plug will regulate well, but it' more than one and a halt' ineh .in length, the annular space c seems tnolmuch elongated, the effect ot' which is to retard the flow ot' oil through the-,thus elongated annular space.

This neeessitates a moreextensive'or wider adjustment of the regulating-'plug which is objectionable-,v

particularly with oil" which in any considerable degree is heavy, or which is not thin and limpid, as none but comparatively thin, light oil will run through a narrow space, and if this space is too long, itis ditiicultto regulate the iiow.

My invention is automatiel iu its operation, but not self-adjlisting?,r or self-regulating, as is claimed for niost of thc tiling-devices intended for the same purpose; but l consider my invention capable of tiner, more accurate, aml certain adjustment ant` regulation than any of the others, besides being; cheaper, more durable, and less liable to get broken or injured, and much more convenient otl malmfactureand use.

l have stated that the spaces l] form reservoirs or large duets, and greatly taeilitat-ethe supply ot' oil to the journal. l will here` state, that the flattening of the shank li, and the consequent formation ot' such spaces, is all-important to bring the column ot' oil sufliciently near the rotary or other mover, in order 'that such oil may be drawn or sucked through the space. c `when the. shaft is in motion, and cease te llow when the lnotion of the shaft ceases. The, in-

tensity of the,sucking-action I have found to he in propmtion to the velocity of the shaft, the ncarness ot' the'colunm ot' oil to the liuc ofaetion, or surface of the shaft or bcaring,aud to the proper and relative adjustment of the lowet` end Aof the plugr tothe sur-A -bubblesare seen to rise and burst on lthe surface` of the oil in the fountain when the shaft is 'in motion.

In practce,the lower end of the regulating-plug las an oil-tester to determine the fluidity or density,

and the luhricating-qualities ot' oil or other lubricant, taking sperm-oil as the standard with the regulatingplug properly adjusted, then by substituting any. other v oil, and noting the difference in the. quantity drawn through the space c by the action ofthe moving-simili'.

The glass tube i's an old device; so also is a. socket to hold its lower end and support it; so with a central passage and a straight wire inserted to controlorregulat-e. thctiow of oil bysubstitut-ing a larger or ai smaller wire. l

1 disclaim the devices last above described; but ,c

I do claim, as my inventon- 1. lhe adjustable regulating-plug, when construct ed, applied, and arranged to operate substantially in the manner aml for the purpose spc'titied. f

2 The combination of all the effective parts specilied, viz, the adjustable regulating-plng, havingatlattened sha-nk, B, aml a tapering` lower end, A, tlc socket c and screw-plug l), the halfnuts vF, and the washer c, aml thc glass globe, all eonstiucted, combine-d, and arranged for action' and effect, as and for the purpose specified.

JONA. J. HOYT. \\'itnesses:

Wn. S. BnowN, JOHN E. CRANE. 

